[ausev] A/C in an EV - battery recommendations?

[jefoy at mindspring.com]

You can also check out Lone Star Carts and Service in Pflugerville. He is a Trojan dealer and he indicated he would get me a volume discount when I inquired a couple of years ago.

-----Original Message-----
>From: Claire Sorenson <csorenson1 at austin.rr.com>
>Sent: Jul 22, 2007 9:58 AM
>To: 'AustinEV News Announcements and General Discussion' <ausev at austinev.org>
>Subject: Re: [ausev] A/C in an EV - battery recommendations?
>
>I just bought a Jet - Ford Courier truck that needs 20 6V batteries.  Which
>Lead Acids are working best for ya'll?  I saw one EV website that
>recommended US 125, 6V flooded Lead Acid golf car batteries that give a good
>range with reasonable price.  The other links on our EV website didn't
>appear to mention much about batteries.  I'm not looking for a long
>discussion of  battery theory as much as short list of what people are
>successfully using now and where you purchased them, especially if there are
>some good local sources.  I would like to have at least the range and m.p.h.
>that my Jet - Ford Escort is getting: 45 range, 50 m.p.h.  Thanks
>
>-----Original Message-----
>From: ausev-bounces at austinev.org [mailto:ausev-bounces at austinev.org] On
>Behalf Of Sarah & Erik
>Sent: Tuesday, June 12, 2007 11:24 PM
>To: AustinEV News Announcements and General Discussion
>Subject: Re: [ausev] A/C in an EV
>
>For scale, it takes about 50 amps at 128V to keep my car going 40 mph ( I
>think it's actually a little less, but it's never flat enough around here to
>actually find out!)
>
>50A * 120V =6kW =~ 8 hp (120V is accounting for some battery sag)
>
>That's battery power, it's probably about 6 hp that's actually making it to
>the road after the controller and the transmission losses.
>
>My understanding is car AC is they are somewhere between 3000-10000 Btu/h,
>which is 1.2-4 hp. It's does take a healthy amount of juice to run AC. BUT
>apparently it also takes less AC to cool your car once converted because you
>no longer have an engine dumping a huge amount of heat in front of your car.
>
>Erik
>
>On 6/12/07, TERRY KING <tntking at sbcglobal.net> wrote:
>> I don't have exact figures in my head regarding how much horsepower is 
>> used to run an R-134 air conditioning compressor off an ICE, but I 
>> think it would surprise us all. I'm thinking at least 10 to15 HP to 
>> run one. Another alternative that just popped into my head is those 12 
>> volt coolers that are plugged into the cigarette lighter. I don't 
>> remember the principle on which they work, and I haven't ever owned 
>> one to see how much capacity they have but they might be adaptable.
>>
>> Brian Lasseter <blasseter.cmpe01 at gtalumni.org> wrote:
>> On 6/11/07, TERRY KING wrote:
>> > I'm laying the groundwork toward converting a Geo Metro to battery
>> electric
>> > and I plan to have air conditioning. I live in No.Texas which is no 
>> > place
>> to
>> > live without it; but it won't be based on refrigerant. I plan to 
>> > circulate chilled water through my existing evaporator using an ordinary
>ice cooler.
>> I
>> > may even try an ice & salt combination but that might be actually 
>> > too corrosive for my aluminum evaporator. I've located on Ebay RV 
>> > water pumps which move .7 to 2.8 gallons per minute and draw around 4
>amps @ 12 volts.
>> I
>> > figure the ice will melt to ambient temperture just about the time 
>> > my battery pack is due a recharge. I'll keep you posted
>>
>> While a realize a question of motives might be a bit of a stretch for 
>> this list, I am kind of curious for a brief take on why you do not 
>> plan on using refrigerant.
>>
>> I live in TX too, and I sure as heck plan on having A/C in my car, but 
>> in my car, the plan is to just use the refrigerant that is already in 
>> the car, and just hook an electric motor to run the compressor. (Even 
>> if I didn't use the refrigerant, I would still have to dispose of it.) 
>> This method is less efficient, but it is cheaper and easier.
>>
>>
>> --
>> TTFN,
>> Brian "Lasso" Lasseter
>>
>> . (512)736-1677 . AIM:digininja . ICQ:2238123 . MSN:azoreg . "No Sane 
>> man will dance." -Cicero (106-43 B.C.)
>>
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>
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